Qianling is one of the 18 Tombs of Tang Dynasty in Guanzhong, Shaanxi Province. It is located on Liangshan Mountain, 6 kilometers north of the county seat of Ganxian City, Xianyang City, Shaanxi Province. It is a joint burial tomb of Tang Gaozong Lizhi and Wu Zetian. The cemetery is large in scale and the mausoleum covers an area of "80 miles of the week." The cemetery has two city walls inside and outside, of which the inner city north and south walls are 1450 meters long, the east wall is 1583 meters long, the west wall is 1438 meters long, the total area is close to 2.4 million square meters. Qianling was built in the first year of Tang Guangzhai, and Shenlong was built in the second year. The construction method of "Because of the mountains for the tomb" is adopted. In addition to the main tomb, there are 17 small burial tombs in Qianling, which are buried with other royal family members and dignitaries. Qianling is the most well-preserved tomb in the 18th tomb of Tang Dynasty, and the only tomb in Tang Dynasty that has not been stolen. On March 04, 1961, Qianling was announced by the State Council as the first batch of key cultural relics protection units nationwide